The example of this look show above is from a look inside the home of photographer Winky Lewis on Design Sponge. When renovating her kitchen, she included family photos in a counter top that she says often functions as an office space.
I'm fond of the idea because, for years, my mom has kept a steady rotation of photos under glass on the family's designated game table. There you might find my grandpa on the beach in the 80s, me as a middle schooler with unfortunate glasses, or my little cousin with his skinny biceps flexed. My mom laments that she's way behind on putting her photos in albums, but I personally like this type of display better.
There are practical benefits, too. The glass makes it easy to clean up spills and messes, and this straight-forward way of displaying photos can provide an impetus for keeping the table cleared off.